7:05 p.m. WJLA has ended its live feed of shooting coverage for now, and we have removed the link. Hewlett-Packard tells The Washington Post that Aaron Alexis worked for one of its subcontractors. The Huffington Post says that there's been at least 10 shootings in Washington D.C. in the past five days, including Monday's at the Navy Yard. The Associated Press has a photo of the arrest made at the White House.

View full sizeA man is taken into custody by uniformed Secret Service Police on Pennsylvania Avenue outside the White House on Monday, Sept. 16, 2013, in Washington. The Secret Service arrested the man for tossing lit firecrackers over the White House fence. (AP Photo/ Evan Vucci)

6:59 p.m.: The Associated Press reports that a man was arrested after tossing firecrackers over the fence at the White House:

A federal law enforcement official says the shoeless man was immediately arrested Monday. An Associated Press photographer heard what sounded like two gunshots outside the White House. Three uniformed Secret Service officers arrested a middle-aged man. The man was white, with dark hair, a blue shirt and white shorts. His white shoes lay on the ground near where the officer tackled him.

6:54 p.m.: An ABC correspondent heard two "pops" at the White House and saw a man tackled by the Secret Service.

6:31 p.m.: The Associated Press says that a photo it distributed of the shooting, involving a person on the sidewalk in front of a CVS, has been disavowed. It has pulled this photo from circulation. This photo was posted to PennLive and has been removed.

6:15 p.m.: At the latest news conference, officials say there is still no known motive behind the shooting. Washington police said that they are still working to see if there a second person of interest involved with the shooting. The police officer injured is out of surgery and stable. Road closures are still in effect around the area of the shooting.

6:03 p.m.: A candlelight vigil for the Navy Yard shooting victims will be held at 7:30 p.m. at the Freedom Plaza in Washington D.C., the Washington Post reports.

5:50 p.m.: The Seattle Police Department said that Aaron Alexis was arrested in 2004 for shooting out the tires in another man's Honda Accord. As the police department writes in its blotter:

When detectives interviewed workers and a manager at the construction site, they told police Alexis had âstaredâ at construction workers at the job site every day over the last month prior to the shooting. The owner of the construction business told police he believed Alexis was angry over the parking situation around the work site.

Detective notes from the incident indicate they made several attempts to contact Alexis by phone and at his work, but eventually found and arrested him outside of his home on June 3rd.

Police then obtained permission to search the home, found a gun and ammunition in Alexisâ room, and booked him into the King County Jail for malicious mischief.

Following his arrest, Alexis told detectives he perceived he had been âmockedâ by construction workers the morning of the incident and said they had âdisrespected him.â Alexis also claimed he had an anger-fueled âblackout,â and could not remember firing his gun at the victimsâ vehicle until an hour after the incident.

Alexis also told police he was present during âthe tragic events of September 11, 2001â³ and described âhow those events had disturbed him.â

Detectives later spoke with Alexisâ father, who lived in New York at the time, who told police Alexis had anger management problems associated with PTSD, and that Alexis had been an active participant in rescue attempts on September 11th, 2001.

5:37 p.m.: Flags have been lowered at the U.S. Capitol in honor of the victims.

5:24 p.m.: If you're from the midstate and happened to be passing through the D.C. area during the Navy Yard shooting, please let us know.

5:10 p.m.:The Washington Post adds that Aaron Alexis received the Global War on Terrorism Service Medal and the National Defense Service Medal.

5:01 p.m.: The Associated Press reports that Aaron Alexis was a full-time Naval reservist from 2007 to 2011. Alexis left the reserves on Jan. 31, 2011, as a petty officer 3rd class. He had been working for the fleet logistics support squadron No. 46, in Fort Worth, Texas.

4:41 p.m.: The Washington Post reports that the lockdown has partially been lifted so that staffers can leave the building. Only Senate staffers will be allowed to enter until Tuesday.

This mugshot of Aaron Alexis was provided by the FBI.

4:35 p.m.: Officials are still seeking a possible suspect wearing an olive military-style uniform, The Associated Press reports. A photo released from the FBI shows Aaron Alexis, right.

4:33 p.m.: Washington D.C. officials will hold another news conference in two hours with additional updates.

4:30 p.m.: The FBI is urging for any and all information pertaining to Alexis and his recent movements. You can do this by calling 1-800-CALL-FBI There will be a moment of silence on Tuesday to honor the victims. They are still searching for a second possible suspect.

4:22 p.m.: 13 are now confirmed dead, including the gunman Aaron Alexis. The Washington Nationals' game with the Atlanta Braves has been rescheduled for 1 p.m. on Tuesday. Some interstates in Washington D.C. area have re-opened.

4:18 p.m.: CNN and The Associated Press report that all three victims in the hospital from the shooting are expected to make full recoveries.

4:15 p.m.: The Washington Post has released more details about Aaron Alexis, the identified shooter in the Washington Navy Yard. The 34-year-old Alexis was originally from Brooklyn and lived in Texas until recently. Public records showed he also lived in Seattle.

Alexis is suspected of using the ID of a former Naval officer to access the Navy Yard. The Washington Post has identified this man as petty officer Rollie Chance. To quote the Post:

Meanwhile, a relative of Alexis said she hadnât seen him in several years.

âWe havenât seen him for years,â said Helen Weeks of her nephew in a telephone interview. âI know he was in the military. He served abroad. I think he was doing some kind of computer work.â

Weeks said she was receiving constant media calls Monday afternoon in which reporters asked her if she knew if Alexis had been involved in a shooting in Washington, D.C. She said she had not been contacted by police.

âIâd be shocked if it was him, but I donât know,â her voice trailing off.

4:10 p.m.:PennLive's Ivey DeJesus reports that many of the midstate's House delegates were still in their districts, and that they were scheduled to be back in Washington D.C. on Tuesday.

DeJesus was told that Sen. Pat Toomey's and Sen. Bob Casey's offices have not received increased calls from constituents about the shooting.

4:07 p.m.:The Switch reports that Reddit has banned a subreddit for finding the shooters. Reddit caught heat earlier this year by falsely claiming several people were behind the Boston Marathon bombings. Meanwhile, the Washington Post reports that a lockdown was lifted from the Department of Transportation.

4 p.m.: Hospital officials are giving an update on shooting victims. Two are in surgery, including a Washington D.C. police officer.

3:40 p.m.: The Associated Press has released more information about the identified shooter, Aaron Alexis of Fort Worth, Texas:

One of those officials says Alexis was a 34-year-old from Texas. He is believed to have a criminal record there and to be a holder of a concealed carry weapon permit.

That official says Alexis is believed to have gotten into the Navy Yard by using someone else's identification card. It is not yet clear if that individual was an accomplice or if that person's ID card was stolen.

3:38 p.m.:The Senate is in lockdown as police continue to search for a possible second suspect. PennLive's Ivey DeJesus will have a full story soon.

3:21 p.m: The Washington Nationals have cancelled Monday's game with Atlanta Braves because of the shooting.

3:16 p.m.:CBS News reports that the gunman from the shooting has been identified as 34-year-old Aaron Alexis of Fort Worth, Texas.

3:03 p.m.:Police say via tweet that a man in a tan, military-style outfit who had been sought in connection with the shooting rampage at the Washington Navy Yard has been identified and is not a suspect or a person of interest in the slayings.

2:58 p.m.: CNN is reporting that the Senate is in recess until Tuesday because of the shooting.

2:23 p.m.: WASHINGTON (AP) â Police say at least 12 people have died in the shootings at the Washington Navy Yard. D.C. Police Chief Cathy Lanier said during a news conference Monday that 12 people were confirmed dead.

Lanier says people are being told to stay in their homes and out of the area as authorities search for two other possible suspects. One of the shooters has died.

The police chief says officers are searching for two other people with firearms wearing military-style uniforms.

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